You can "improve" the software all you want, but if your hardware is inadequate it won't make any difference. (Of course I'm sure that company would be happy to sell you their product whether it works for your purposes or not)
Since most laptops don't let you upgrade the video card (and the few high end ones that do already have a better card than this game needs), you'll probably have to get a new computer for it. The demo gives a good idea of whether the game will work on your system or not.
According to the system requirements listed herehttp://www.giantbomb.com/hoodwink/61-38831/
you need an Nvidia or ATI Radeon capable of Shader 3.0 or better for this game. They don't mention Intel graphics.